Signal-bell.



4a. w. ADAMS." swarm BELL.

APPLICATION FILED OCT. 20.19I6.

1,284,95' I Patented N0v.19,1918.

,7 Fg 5 .7gv Y y 14.11.4131 v y .1 l A INVENTOR WITNESSES ATTORNEY BERYLW. ADAMS, 0F TROY, MONTANA.

SIGNAL-BELL.

Application filed October 20, 1916.

To all whom t may concern:

Be it known that I, BERYL W. ADAMS, a

citizen of the United States, residing at` Troy, in the county ofLincoln and State of ontana, have invented certain new and usefulImprovements in Signal-Bells, of which the following is a specification.

This invention relates to an improvement in signal bells and moreparticularly to bells such as are adaptable for use in conjunction withmine hoists and the like to give signals to the hoist engineer, andinother similar connections, the purpose being to provide a bell bywhich single stroke signals may be given in clear plain tones and athigh speed without confusion.

An object of my invention is to Iprovide a bell together with actuatingstructure therefor which is to be connected in on an alternating currentcircuit and is so arranged that single stroke signals will be soundedirrespective of whether the energizing connection of the circuit is madeof short or long duration, and to so construct the parts that even whenthe circuit is` connected in for ,some time no damage will result.

A further object lies in providing means in connection with the bellclapper by which the clapper will be given a sharp stroke and will thenbe returned to a position out of contact with the bell for successivealarm or signal strokes without depending upon electromagnetic or otherelectrical means for the return.

With the above and other object-s in view,

' my invention consists in certain novel features of construction andcombinations of parts which will be hereinafter set forth in connectionwith the drawings and then more particularly pointed out in the claims.

In the drawings: Figure 1 is a view in front elevation of the device ofmy invention.

Fig. 2 is a view in side elevation. Fig. 3 is a sectional View taken onthe line 3 3 of Fig. 1.

` Fig. 4 is a fragmentary sectional view to illustrate portions of thedetail construction. Fig. 5 is a vertical sectional view through theelectrically operated bell vstriking means. Fig. 6 is a detail sectionalView to better show the arrangement of the clapper actuatv ing means.

The supporting base structure 1 may be Specification of Letters Patent.

Serial No. 126,772.

constructed of wood, slate, or any other suitable material, and the gong2 of the bell is mounted at the lower end thereof. A clapper mountingbracket 3 is secured on the base 1 above the gong 2, and the clapper 4is mounted on this bracket 3 by means of the stem 5. The stem 5 of theclapper is connected with the bracket 3 to be capable of swingingmovement so that the clapper 4 may be brought into and out of strikingengagement with the gong 2, and a coil spring 6 is connected between anarm 7 on the stem 5 and an arm 8 formed in conjunction with the bracket3, this coil .spring acting to normally hold the stem 5 swung upwardlyso that the clapper 4: is out of contact with the gong 2.

A bracket is mounted on the base 1, above the clapper stem 5, and asshown this bracket comprises the base 9 continued in an arm which at thehead thereof has an opening 10. At a point below the opening 10, thestem 5 has a. striking or anvil block 11 secured to be brought againstthe bracket 12 in the upward swinging movement of the stem, the partsbeing so arranged that as a blow is struck, against the block 11,

the spring 6 will be flexed sufficiently that Patented Nov. 19, 1918..

the stem 5 will swing sharply down and in consequence the, clapper 4cwill be brought with a sharp stroke against the gong 2, the spring 6acting to immediately return the clapper from the striking position andto catch the same upon the rebound and holdit.

Electrically actuated means is employed to strike the driving blowagainst the block 11, and this means constitutes a sleeve 13 which hasthe coil windings 14 thereon. Suitable connections are made from theterminal wires of the coil 14 to the circuit wires 15 and 16, which maybe connected to a plug socket which in turn is connected with the mainline circuit wires 17 by the insertion of the plug 18 into the socket. Acore 19, which is constructed as better shown in Fig. 5 is arrangedwithin the sleeve 13 to be capable of limited endwise movement, abearing ring 20 being connected with the lower end of the sleeve 13 tohold the core 19 in its proper path of movement and a ring 21 beingmounted on the upper end of the sleeve 13 for the same purpose. The core19, which is of wood or other suitable material, at its upper end ispreferably made hollow and has the short wire members bunched as at 22to form a laminated core structure which will be more readily affectedby current passing through the wire of the coil 14. The core 19 isreduced and made of less diameter than the interior bore of the sleeve13, at its lower end, and a coil spring 23 is mounted between theshoulder 24 of the core and bearing ring 20 so that the core 19 will benormally lifted by this spring 23.

A supporting bracket str ucture 25 is mounted above the sleeve 13l andin line therewith, and a ball or block 26 of a cushion material is heldin conjunction with this bracket by a clamping member 27 so that as thecore 19 is forced upwardly through the action of the spring 23, theupward movement thereof will be stopped by contact with the cushionvmember 26. It is essential that the winding of the coils 14 be such thatthe attractive force will vbe exerted to force the core 19downwardly,and thus when a switch, button, or other circuit connection in the maincircuit 17 is thrown in to connect the circuit wires, the coil 14 willbe energized and in consequencel the core 19 will be drawn sharplydownwardly against the tension of the spring 23 and will strike adriving blow against the striking block 11 to impart movement to thestem 5 and will consequently bring the clapper 4 against the gong,striking aclear and plain tone. As the circuit connecting means isreleased, the coil 14 will be denergized and in` consequence the core 19will be again raised through .the action ofv the spring 23 and will bebrought up against the cushion member 26, or if the circuit connectionis not broken, then the coil 14 will remain in an energized conditionand the lower end of the core 19 will be retained against the block 11,however, further striking blows of the .clapper 4 will not occur as asharp blow against the anvil block is required to cause contact of j theclapper with the gong. Under some circumstances it may be fou-nddesirable to introduce some means of opening the circuit when it is leftclosed through inadverteiice or through any other cause, and toaccomplish this purpose a hot wire circuit opening means may beintroduced in the wire 16 or in the wire 15, such a means being shownconnected at 28 in the circuit 4wire 16 from the plug socket to one ofthe terminals of the winding of the coils 14. This automaticallyoperating circuit braking means may be of any standard form andconstruction, and for this reason the details thereof are not hereinshown and described. To permit removal of the parts of the electricallyactuating means, itis desirable that the clamp member 27 be maderemovable so that the cushion member 26 can be displaced, and the coi-e19 can thuS be drawn vertically the upper side of theV upwardly from itsmounting within the sleeve 13, and I therefore vprovide the clamp bolts29 to retain this clamp member 27 in the position of securing the blockor cushion member 26. It is of course understood that the core 19 isreduced at its lower end to be received through the opening 10 of thebracket, and the bracket is placed at a height that a driving blow ofthe core is necessary to bring the clapper against the bell, the bracketacting to hold the core against excessive downward movement.

While I have herein shown and described only one specific form of thedevice, it will be understood that changes and modifications might beresorted to in the form and' arrangement of the parts as well as in thecircuit connections thereto without departing from the spirit and scopeof my inveiition, and hencel do not wish to be limited to the exactdisclosure but only to such points as may be set forth in the claims.

I claim:

1. A signal bell comprising a base structure, a gong mounted on thelower end of said base structure, a clapper having a stem pivotallymounted on the base structure, a spring to normally hold said vstemraised to resilicntly retain the clapper out of contact with the gong, abracket having an opening therein mounted on the base, a striking blockcarried by the clapper stem to come against the bracket to stop raisingmovement thereof, an electroemagnetic coil arranged. above the strikingblock, a core mounted within the coil to be capable of movement, aspring acting to normally raise said core within the coil,v a cushionmember mountedon the base structure to hold the core against excessiveupward movement, and circuit connectionsarranged through the coilbywhich the same maybe energized to cause downward travel of the core tostrike through the opening in the bracket against the striking block andto impart a driving blow through the clapperstem to the cla-pper tocause the same to be moved against the tension of the retaining springand to contact with the gong.

.2. A signal bell of theV class described comprising a base, a gongcarried thereby, a clapper member supported upon said base,

a s rin lenOaOin said cla er member for g zu zg normally holding thesaine in an inoperative position, means for drawing said clapper Ymember downwardly vinto operative engage-` in a proper position forengaging said clap` per as said clapper returns to its normal position.

3. A signal bell of the class described engagement with said gong, thebracket cari ried above said plunger, a spherical cushion membersupported upon said bracket, a retaining plate, said spherical memberextending through said retaining plate, and adjustable screws carried bysaid bracket and engaging said retaining plate for yieldably.lsgupporting said cushion member upon said ase.

4. A signal bell of the class described comprising a base, a verticallymovable plunger carried by'said base, electro-magnetic means adapted tobe energized for forcing said plunger downwardly, a gong engaging meansactuated by said plunger, a bracket supported above said plunger on saidbase, said bracket provided with an aperture formed therein, a sphericalcushion member seated partly within said aperture, a retaining plateprovided with an aperture adapted to permit said spherical member toextend partly therethrough, and adjustable retaining screws carried bysaid bracket and engaging said retaining plate for yieldably supportingsaid cushion member upon said bracket. J

5. A signal bell of the class described comprising a base, a gongcarried thereby, a gong engaging stem supported upon said base, an anvilblock carried by said stem, a guiding bracket for limiting the upwardswinging movement of said stem, a plunger adapted to extend through saidguiding bracket and engage said anvil block for forcing said stem intocontact with said gong, a spring supporting arm carried by said baseadjacent said stem, said stem provided with an upwardly extendinglinger, a spring engaging said finger and also engaging said arm fornormally holding said stem in an inoperative position, and means foractuating said plunger.

In testimony whereof I affix my signature in presence of two witnesses.

CLIFFORD H. CLAY, EARL BANENT.

Copies of this patent may be obtained for ve cents each, by addressingthe "Commissioner of Patents, Washington, D. 9.

